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A Prius Plug-in set London's Bedford Square aglow this week as it powered an array of twinkling lights as part of a Camden Christmas celebration.

Decked out in a seasonal snowflake livery, the Prius Plug-in was able to create the seasonal display using power from its hybrid system's lithium-ion battery pack, with no emissions to cloud the occasion.

The festive fun included carols from the Trinity Laban Choir and a refreshment van, also provided by Toyota, served free hot drinks and mince pies.

The Prius Plug-in was making its debut as part of the borough's Cleaner Air for London Businesses project. This gives local businesses the chance to try out the latest electric vehicles and demonstrate the benefits of low and zero-emissions transport.

The event was part of a wider attempt to spread a serious health message. Studies by the Mayor of London's office report that more than 5,000 deaths a year in the capital are related to emissions such as diesel particulates and NOx, which can also cause asthma.

In city centre traffic, where pollution levels are densest, plug-in hybrid cars can be driven in EV all-electric mode, producing zero tailpipe emissions.

In EV format Prius Plug-in produces no particulates or NOx and has official CO2emissions of 49g/km and 134.5mpg combined cycle fuel consumption.

First drive review: Toyota Prius Plug-in